KR100811021B1 - Abutment for dental implant and associated components for use therewith - Google Patents

Abstract

An abutment ( 10,10 A, 10 B, 10 C) for a medical or dental implant has a prosthetic receiving tapered post formed with a locking step ( 10 e) for removably restraining a sleeve member such as an emergence cuff ( 12,12 A). The emergence cuff is receivable on the post of the abutment and has an outer surface configuration which merges confluently with the abutment outer surface. The emergence cuff is formed with a snap on interface ( 12 g) for use with a second sleeve ( 14,14 A) having a complimentary snap on interface ( 14 e). When the second sleeve is open ended, a pin ( 16 ) is shown for closing off the outer end of the second sleeve, if desired.

Description

ABETMENT FOR DENTAL IMPLANT AND ASSOCIATED COMPONENTS FOR USE THEREWITH}

Cross Reference of Related Application

This application is the priority claim application of Provisional Application No. 60 / 232,522, filed September 14, 2000.

Field of invention

The present invention relates generally to dental or medical prosthetic implants, more particularly to abutments for use with artificial teeth and related members used in the implantation procedure.

Background of the Invention

As taught in US Pat. No. 5,749,731, assigned to the trustee of the present invention, at the time of mounting the abutment on the root member, an annular cuff formed of a suitable biocompatible material is placed on the permanent abutment member, followed by It is known to treat tissue by suturing it on the cuff and abutment member. After sufficient treatment, the cuff can be removed while retaining the groove so that the dental sphere has a predetermined optimal shape. The cuff may be formed with a circumferential lip disposed in the undercut of the support and extending inward to provide a positive sheet for the cuff.

It is an object of the present invention to provide a locking mechanism for holding a first sleeve on the abutment whose outer surface smoothly fuses with the outer surface of the abutment. Another object is to provide a second sleeve having an interface for locking the first and second sleeves together. It is another object of the present invention to provide a second sleeve that is shaped for interlocking with other dental materials.

Summary of the Invention

Briefly, abutment systems made in accordance with the present invention comprise abutments having several variations with various taper post or screw diameters, gingival diameters, lengths, abutment post diameters and abutment post heights for mounting to the root member. do. Each abutment post has a retaining shape, such as an emergence cuff or a wax-up sleeve, for holding or locking the member. The abutment is formed of a biocompatible material such as titanium alloy or ultra high density polyethylene.

The immersion cuff or first sleeve member formed of a suitable material, such as plastic, is similar to that shown and described in the US patent, but is adapted for use with the abutment retaining shape and provides an interface for any second sleeve member. do. In addition, the second sleeve member formed of a suitable material such as plastic, ceramic or metal is snapped into the first sleeve member, in particular when providing an undercut for the maintenance of the second sleeve in the impression material, for example to produce an impression. Can be used to                 

Sleeve pins formed of a suitable material, such as metal, plastic, ceramic or composite material, are used to snap to the occlusal end of the second sleeve member, or for purposes such as impression making, waxing sleeves, orthodontic copings, jigs, Or as a one-piece sleeve to provide an outer profile for prosthetic fabrication for contouring of soft tissues during treatment and for stabilization of the implant. The pin can be used to temporarily close the sleeve opening and expand the height of the sleeve. The one-piece or two-piece sleeve member may be versatile, such as for impression making, crown making, abutment modification, and correlation recording, in the oral cavity as well as in a laboratory set. For example, the sleeve member may actually have the shape of a tooth, thereby providing a final medical or dental prosthesis with a foundation for metastasis, or with special additions or deletions for specific restorations.

Further objects and aspects of the invention will be set forth in part in the description which follows, and in part will be apparent from the description. The objects and advantages of the invention may be realized and attained by means of the instrumentalities, combinations and methods specifically set forth in the appended claims.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the invention and, together with the description, serve to explain the objects, advantages, and principles of the invention. In the drawing,

1 is a front view of a straight abutment with a first nominal diameter root mounting post, and FIG. 1A is a right end view thereof;

2 is a front view of a straight abutment with a smaller second nominal diameter root mounting post, and FIG. 2A is a right end view thereof;

3 is a front view of an angular abutment with a second nominal diameter root mounting post, and FIG. 3A is a right end view thereof;

4 is a front view of a long angular abutment with a second nominal diameter root mounting post, and FIG. 4A is a right end view thereof;

5 is an enlarged sectional view taken through the immersion cuff or the first sleeve member, and FIG. 5A is a left end view thereof;

6 is an enlarged cross-sectional view taken through another immersion cuff or first sleeve member, and FIG. 6A is a left end view thereof;

FIG. 7 is a partially cut front view of a second sleeve receivable on the first sleeve, FIG. 7A is a left end view thereof, FIG. 7B is a right end view thereof, and FIG. 7C is an enlarged view of a portion of FIG. 7 separated;

8 is another front view of a second sleeve showing the details of the incision for locking with the impression material;

FIG. 9 is a front view of the pin receivable at the outer end of the second sleeve member shown in FIGS. 7 and 8, and FIG. 9A is a left side view thereof;

10 is a front view of abutments made in accordance with the present invention, with the first and second sleeves, removable partially locked on the abutment, partly in broken line and partly in cross section.

Detailed description of the invention

1 and 1A, the abutment 10 is an implant or root member having a complementary locking taper for mounting a crown, or a post receiving bore formed of a base or central portion 10b and a post 10c. Abutment 10 is shown with a locking tapered post for receipt in a not shown. The post portion 10c is preferably formed with one or more anti-rotation plates 10d and a locking step portion 10e for the removable holding of the sleeve member, which will be described later. The step portion 10e may be formed to extend completely around the circumference or, if necessary, along its portion, for example, along the rounded portion of the circumference as shown.

The abutment can be manufactured with the same fixed taper as shown by the embodiment of FIGS. 1-4, but with implant receiving posts 10a of different lengths, diameters, angles and shapes, connecting the bases. Each of the transplant receiving posts 10, 10A, 10B, 10C of the abutment 10Aa, 10Ba, 10Ca has a smaller diameter than the post 10a. The posts 10Ba, 10Ca are all angled at an angle α with respect to the crown receiving posts 10Bb, 10Cc, respectively, for use, respectively, at the position where the implant requiring such orientation is placed. The lengths of the crown receiving posts 10c, 10Ac, 10Bc, 10Cc can vary as shown by the elongated posts 10Ac of FIG. 2, but they are all generally the same external structure, including the truncated conical foot portion. It is provided with a. The abutment prepared by the present invention has a portion of the crown receiving foot having a large diameter "a" of 0.205 mm and a small diameter "b" of 0.158 mm and an inner or inner diameter (surface closest to the center) of 0.117 to 0.121 mm. A crown receiving post formed with a 6 ° 34 'taper with a step 10e having a diameter of 0.123 to 0.125 outside or outside (face furthest from the center).

5, 5A, 6, and 6A show an immersion cuff with a tapered air gap 12a having a size and arrangement that essentially matches the crown receiving post of the abutment described above, including the foot portion 12f and the plane 12d. Or two forms of the first sleeve member 12, 12A. The small diameter "c" of the void 12a is selected to be slightly smaller than the diameter on the inner side of the step portion 10e, that is, with respect to the specific example of the above-described abutment, the diameter "c" is selected from 0.122 to 0.124 mm. When placed on the crown receiving post of the preparation prepared by the present invention, the immersion cuff snaps onto the step portion 10e for retainable removal on the post, and the foot portion 12f of the immersion cuff is the foot of the preparation. To be received on portion 10f. The external arrangement 12b, 12Ab, 12Bb, 12Cb of each immersion cuff 12, 12A may vary as appropriate for a given jig profile, but preferably the outside of the base 10b, 10Ab, 10Bb, 10Cb of each abutment. It will form a smooth, fused surface with an array.

The outer end, i.e., the outer opposing foot portion 12f, of the immersion cuff may be formed with a snap on the interface 12g for use with a second sleeve member to be described later if necessary. The interface 12g comprises a hub portion comprising an observation groove of an immersion cuff forming a circumferentially extending groove 12h with a selected width 12k and a radially extending flange 12m. The flange 12m has a reduced outer diameter with respect to the corona end portions of the outer surface portions 12b and 12Ab on the other side of the groove 12h for receiving in the opening in the second sleeve member to be described. The rounded edge face 12n is formed on the flap on the outer face for the purpose of being described. The flange is preferably formed with an anti-rotation plane 12o for internal engagement with the corresponding anti-rotation plane on the second sleeve member. The overall length of the immersion cuffs 12, 12A is selected such that when the foot is fixed on the foot 10f of the preparation prepared by the present invention, the tube end 12p is disposed on the inner side of the step 10e.

The second sleeve member 14 is shown in FIGS. 7 and 7A-7C and preferably extends in the longitudinal direction 14b, which essentially forms a continuation of the voids of the immersion cuff used with the second sleeve member. And a truncated conical outer body structure 14a, preferably having a longitudinally extending second void portion 14c having a constant diameter. The interface 14g includes a concave flange receiving sheet 14d at an inner or large diameter end having a width 14e and a diameter 14f extending in the longitudinal direction. The mouth of the flange receiving sheet has a diameter in the range from the inner end face of the sleeve 14 at the diameter 14h to the small diameter 14i inside the selected longitudinal distance 14k forming the lip 14r. It is formed with a slope having a. The opposite angled inclination extends from the lip, ie from the diameter 14i to the flange seat diameter, over the longitudinal distance 14m.

The second sleeve 14 is attached to the immersion cuff 12 by placing the inclined portion 14k on the flange 12m, the outer diameter of the flange 12m being in the middle of the diameter 14h, and the flange sheet ( It is preferable that it is slightly smaller than the diameter 14f of 14d). The second sleeve is pressed on the immersion cuff until the flange 12m snaps back behind the small diameter portion 14i. The longitudinal width of the flange 12k is smaller than the longitudinal width of the flange seat 14d, and the longitudinal width of the groove 12k is joined to the tube cross section 12s of the immersion cuff and the inner cross section of the sleeve 14 to each other. The groove portion is selected to extend over the two inclined portions. In addition, the flange sheet 14d is formed with an anti-rotation plane 14o that works together with the corresponding plane 12o of the immersion cuff. As shown in FIG. 7B, the second sleeve 14 is also formed with a rectangular ear portion 14t for operation. When used to cooperate with the impression material, the second sleeve may be formed with an undercut 14u as shown in sleeve 14A of FIG. For example, the immersion cuff and the second sleeve member produced by the present invention had the following size with respect to the snap on the interface.

Emergency cuff (12, 12A)

Outer diameter of flange (12m): 0.170 / 0.169 mm

Diameter on the inner surface of the groove 12h: 0.150 mm

Longitudinal length of groove (12k): 0.018 mm

Longitudinal width of flange 12r: 0.015 mm

Second sleeve member 14, 14A

Diameter of flange seat (14f): 0.171 / 0.172 mm

Longitudinal width 14e of the flange seat 14d: 0.021 / 0.018 mm

Diameter (14 h) at the mouth of the flange sheet: 0.173 / 0.174 mm                 

Diameter 14i (lip 14r) at the inner cross section of the outer slope: 0.167 / 0.168 mm

Longitudinal length of outer slope (14k): 0.010 mm

Longitudinal length of the inner slope (14m): 0.004 mm

Diameter of the void portion 14c: 0.100 mm

9 and 9a show a pin 16 with a body portion 16a and a head 16b, the body portion 16a of the second sleeve 14, 14A for closing the second sleeve if necessary. It has a diameter selected to fit the void 14c at the end of the tube. In the case of the above-described second sleeve member, the diameter of the main body portion 16b is 0.100 mm, preferably extending in the radial direction of the diameter 16c of 0.102 mm inclined down to the diameter 16d of 0.090 mm. It is selected to have a centrifugal free end with beads. If desired, the diameter 16e of the head 16b may be chosen slightly larger than the outer ends of the second sleeves 14, 14A. As mentioned above, the second sleeve may be formed such that the end is open, or it may be preformed with the closed end.

FIG. 10 shows abutment 10 in which either the immersion cuff or first sleeve member 12 is snapped on top or the second sleeve member 14 is snapped to the immersion cuff. The external arrangement of the second sleeve can be formed as shown to form a step into the immersion cuff if necessary or can be formed to fuse into the immersion cuff. Generally, the abutment may be formed of titanium or a titanium alloy, or when used as a preparation for transition treatment, may be formed of ultra high density polyethylene or the like, but the sleeve member may be formed of a metal, plastic, ceramic material such as polycarbonate, poly Ceramic, acrylic composites, aluminum oxide, polyglass or any other suitable biocompatible material.

As mentioned above, the immersion cuff can be used in the same manner as the patent method cited above. For example, the immersion cuff can form a temporary crown or can function along the second sleeve member, in particular as an impression post with the undercut 14u of FIG. 8, so that it can be locked and retrieved from the impression medium. . The immersion cuff assists in placement of the crown / butt interface below the gingiva for various depths of gingival tissue present at the abutment / graft interface.

The second sleeve member, or one-piece sleeve member, is multifunctional, for example, to facilitate the unsealing of the manufactured dental or medical prosthesis, to record the geometry of the location of the preparation, or to introduce a dental or medical prosthesis in practice temporarily or permanently. And can be used as a template or jig, or as a preparation to represent the appearance of soft tissue or to stabilize a therapeutic implant. The sleeve member can be configured elliptical to copy various heights and shapes, such as incisors. The sleeve member can be closed and can be easily changed according to various clinical conditions. In essence, the sleeve member can have the same size and shape as the teeth, requiring only a few changes to certain clinical conditions. In the case of an elongated one-piece sleeve member, the internal void may be formed with suitable holding means for interlocking with the step portion 10e of the abutment crown receiving post, for example, the stepped portion having a mirror image of the step portion 10e. When the member is mounted on the abutment, the stepped portion (in the same manner as the mirror image step) interlocks with the stepped portion 10e at the ends of these fusion cuffs 12, 12A defined by the diameter " c " of each immersion cuff. It will be understood that it is located within the void of the sleeve member at the position selected to cooperate with 10e).

Although the present invention has been described with respect to certain preferred embodiments, modifications and variations thereof will be apparent to those skilled in the art. Although it has been described above that the immersion cuff is detachably held to the step portion 10e, when the sleeve is required to be permanently retained, for example, when used as a prosthetic crown as described above, the member may be attached by bonding. Increasing or alternatively, it can be permanently attached by suitably engaging the member to the abutment crown receiving post. Therefore, the scope of the appended claims should be interpreted as broadly as possible from the viewpoint of the prior art, and it will be understood to include such various modifications and variations.

Claims (22)

For use with an implant placed in a bone of a patient comprising a mount for receiving in an implant, a central with a smooth curved outer surface and a prosthetic mounting post extending from the central medial side to the central lateral side As an abutment, the prosthetic mounting post is generally cylindrical and tapered along the selected length of the prosthetic mounting post, the selected length of the prosthetic mounting post being the first inner shaft length and the second outer shaft length. Each shaft length portion has a circumferential portion that decreases as the distance from the center increases, and the prosthetic mounting post has a locking step disposed between the first inner shaft length portion and the second outer shaft length portion. The locking step is increased relative to the circumference of the prosthetic mounting post immediately adjacent to the locking step on the inner side of the prosthetic mounting post. The abutment tooth having a circumference, wherein the locking step is formed at a predetermined distance from the center portion. The abutment tooth according to claim 1, wherein the prosthetic mounting post is formed with one or more anti-rotation planes on its outer circumference. The abutment tooth according to claim 1, wherein the mounting portion comprises a post formed with a locking taper for receiving in the cavity of the implant with a mating locking taper. The abutment according to claim 1, wherein the mounting portion includes a post formed with a screw that is screwed into a mating screw in a bore of the implant. The abutment tooth according to claim 1, wherein the locking step extends along only a portion of the circumference of the prosthetic mounting post. The abutment tooth according to claim 2, wherein the locking step extends along the cylindrical portion of the prosthetic mounting post. 2. The method of claim 1, further comprising a sleeve member having first and second ends formed with voids extending from the first end to the second end, the voids having a first inner axial length of the prosthetic mounting post. A first end that is receivable on the center of the abutment and the taper that generally matches the taper of the sleeve member, wherein the second end portion is formed when the first end of the sleeve member is received on the center of the abutment. Said sleeve at said second end having a distance from said first end to said second end selected to be disposed at a first inner shaft length portion of the prosthetic mounting post adjacent to the locking step on the inner side of the prosthetic mounting post; The air gap of the member has a circumferential portion that matches the circumference of the prosthetic mounting post immediately adjacent to the locking step. 8. The preparation tooth according to claim 7, wherein the prosthetic mounting post is formed with one or more anti-rotation planes on its outer circumference and the void of the sleeve member is formed with a mating anti-rotation plane. 8. The sleeve member of claim 7, wherein the center portion of the abutment is formed with a truncated conical foot portion, and the first end of the sleeve member is formed with a complementary foot portion leading to a void in the sleeve member. The outer surface of the abutment forming a smooth curved surface fused with the outer surface of the abutment member. The abutment tooth according to claim 9, wherein the central portion and the outer surface of the sleeve member are convex. 8. The method of claim 7, wherein at least a portion of the void at the second end of the sleeve member is circular with a selected diameter, and at least a portion of the circumference of the prosthetic mounting post immediately adjacent to the locking step at the inner side of the locking step is of a diameter. The abutment smaller than the selected diameter and the diameter of the locking step is larger than the selected diameter. The abutment tooth according to claim 11, wherein the difference between the selected diameter, the inner diameter and the outer diameter is 2 to 800 x 10 ^-3 mm. 8. The method of claim 7, wherein at least a portion of the voids at the second end of the sleeve member are circular having a diameter of 0.122 to 0.124 mm, and at least a portion of the circumference of the prosthetic mounting post is in a locking step immediately adjacent to the locking step. The abutment in which the diameter at the side is 0.117 to 0.121 mm and the circular shape at the outer side of the locking step is 0.123 to 0.125 mm. 8. The preparation tooth according to claim 7, wherein the second end of the sleeve member is formed with a locking interface to the second sleeve member. 15. The device of claim 14, wherein the sleeve member has a smooth outer surface structure and a second cross section, the circumference selected from a second cross section of the sleeve member, and the locking interface extends from the second cross section of the sleeve member. A longitudinally extending hub, the longitudinally extending hub having a groove extending circumferentially between the second cross section and the radially extending flange, the radially extending flange of the outer structure at the second cross section; And further comprising a second sleeve member having a circumference smaller than the circumference and having first and second ends, wherein the first end formed with a flange receiving recess has a structure complementary to the flange and the flange receiving recess. A lip formed between the portion and the first end of the second sleeve member, the lip selected to form an interface that fits the flange. Which will have an abutment. The abutment tooth according to claim 15, wherein the flange is formed with an inclination on the face of the flange opposite the groove to facilitate the placement of the flange within the flange receiving recess. The abutment tooth according to claim 15, wherein the first end of the second sleeve member is formed with a slope leading to the lip, and the other slope extends from the lip to the flange receiving recess. The elongated elongated structure according to claim 15, wherein the second sleeve member is formed with a void extending therethrough, and has a structure that is mounted almost intimately with the void of the second sleeve member to close the void of the second sleeve member. The preparation tooth which further includes the pin provided with a main body. The abutment tooth according to claim 15, wherein the second sleeve member has an outer surface formed with an undercut portion to provide a locking mechanism. 8. The preparation tooth according to claim 7, wherein the sleeve member has an external shape corresponding to the selected tooth such that the sleeve member can be modified to apply to a particular clinical condition. For use with an implant placed in a bone of a patient comprising a mount for receiving in an implant, a central with a smooth curved outer surface and a prosthetic mounting post extending from the central medial side to the central lateral side As an abutment, the prosthetic mounting post is generally cylindrical and tapered along the selected length of the prosthetic mounting post, the selected length of the prosthetic mounting post being the first inner shaft length and the second outer shaft length. Each shaft length portion has a circumferential portion that decreases as the distance from the center increases, and the prosthetic mounting post has a locking step disposed between the first inner shaft length portion and the second outer shaft length portion. The locking step has an increased circumference relative to the circumference of the prosthetic mounting post immediately adjacent on the inner side of the locking step; And further comprising a sleeve member having first and second ends formed with voids extending from the first end to the second end, the voids being at least a portion of the corresponding voids of the prosthetic mounting post from the center to the locking step. A taper that mates with a sleeve slidably received with a first end of the sleeve member received on the center of the abutment on the mounting post, wherein the void is formed when the first end of the sleeve member is received on the center of the abutment. Abutment formed with a retention surface receivable in the locking step to engage the inner surface of the locking step. The abutment tooth according to claim 21, wherein the retention surface is located on the second end of the sleeve member.

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